Who are those people walking along the street with banners?A group---the league for global Environment Protection.A calling B called C called itself D is called

问题描述:

Who are those people walking along the street with banners?A group---the league for global Environment Protection.
A calling B called C called itself D is called

D被动语态

选B group后面的成分做后置定语修饰group,所以要用非谓语动词,因此可排除D.由于call与group是被动关系,所以排除A.而C明显的时态不对.综上选B